TI introduces industry’s first single-chip battery management device for power tools and e-bike applications
Highly integrated, standalone device provides complete pack protection and cell-balancing for 4- to 10-cell lithium battery packs
Bangalore (July 20, 2011) – Texas Instruments Incorporated (TI) today introduced the industry’s first fully integrated battery protection and cell-balancing solution for Li-Ion and lithium iron phosphate battery packs. The bq77910 battery management and protection device can manage 4- to 10-cell battery packs, and two devices can be stacked to protect 11- to 20-cell packs. The device simplifies battery pack designs for e-bikes, e-scooters, portable gardening tools, power tools and uninterruptible power supplies (UPS) and can also be used when replacing lead acid batteries. For samples and evaluation modules, visit www.ti.com/bq77910-pr.
The bq77910 protects the battery pack by monitoring individual cell voltages and drives two N-channel power MOSFETs to interrupt current flow during fault conditions. Fault detection and recovery criteria for the device are fully programmable in non-volatile memory to suit all types of lithium battery systems.
Key features and benefits of the bq77910
- Battery management and protection for 4- to 10-cell lithium batteries: Individual cell monitoring and balancing with internal FETs maximizes battery pack service life and performance.
- Low power operation: Low quiescent current (50 uA typical, 2.5 uA in shutdown mode) minimizes battery discharge during storage or idle periods to optimize battery life.
- Supports additional lithium battery chemistries: Programmable (EEPROM) fault detection thresholds and time delays make the bq77910 adaptable to all variations of lithium systems, including LiCoO2 and LiFePO4.
- Standalone integrated solution does not require an external controller or processor.
Tools and support
TI offers a variety of tools and support to speed the implementation of the bq77910 family of devices:
Find out more about TI’s battery management portfolio by visiting the links below:
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